A dual-band circularly polarized planar monopole antenna for Wireless Local Area Network/Worldwide Interoperability for Microwave Access applications

作者：Yang, Dong; Zhai, Huiqing^*; Xue, Kun; Xi, Lei; Wu, Xinhua; Li, Yinhu

来源：Microwave and Optical Technology Letters, 2019, 61(2): 399-404.

DOI：10.1002/mop.31568

• circularly polarized
• dual-band
• planar monopole antenna

In this letter, a new dual-band circularly polarized (CP) planar monopole antenna is proposed. Simply by embedding an asymmetrical T-shaped strip into the arc-shaped feedline, dual-band operation and CP radiation can be obtained. Furthermore, adding an inverted-L-shaped strip to the previous designing, the axial ratio bandwidths (ARBWs) can be greatly improved. After fabricating and then testing, the measured results indicate that the impedance bandwidths (IBWs) below 10-dB can reach 240 MHz (2.39-2.63 GHz) and 2.73 GHz (3.85-6.58 GHz), and the 3-dB ARBW can cover 260 MHz (2.26-2.52 GHz) and 2.48 GHz (3.9-6.38 GHz). The designed antenna can be applied to the WLAN (2.4/5.2/5.8-GHz) and WiMax (5.5 GHz) multi-function and multi-mode communication systems felicitously.

• 出版日期2019-2
• 单位西安电子科技大学